in its thoroughly natural hues. The air brush was invented in the United States a wood, leather, and other materials are also decorated The spectra are produced by a "grating" as for a number of years ago and was first employed in color- half-tone engraving, and a medium which disperses with the… … distance between the air brush and the work. Fine places. The small spectra will be covered on those Fig. 1.—Veyron's Improved Air Brush. lines are traced by putting the instrument very close places, which are dark in the positive; and in each to the fabric or paper and drawing back the button of…
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